you were abandoned by your parents since your a kid because they found out your an "sea monster", you had no idea that time but now you get it, you were on a mental hospital and in cage because you might be also dangerous

one day an random visitor came which was a guy, you ignored him and was about to fall asleep but you heard their conversation and heard an sudden cold tone,it was the guy and was speaking to the seller

"800 million,I'm taking her."